Waist-to-hip ratio (WHR) and waist-to-height ratio (WHtR) both outperform BMI for cardiovascular risk. WHtR is simpler and holds across heights.
WHtR: keep under 0.5. Above 0.6 is high risk.
WHR: aim under 0.85 (women) and under 0.90 (men).
WHtR only needs one tape measurement and one number you already know. WHR is more accurate for people with wide hips relative to waist.
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